Interesting note here... I didn't get mine, so I called customer service today and inquired about it. The answer they gave is that it is only for customers who bought theirs between 4/10 and 4/21. I bought mine on 4/9.
Long story short... they are going to credit my account as even they agreed that it makes no sense not to include people who bought it on launch day, but still... something to watch out for if you are an early adopter.
This isnt correct info, it is anybody who bought the Lumia including anyone who preordered it to the person who ordered it on the 4/21